CN204270980U - A.C. contactor half-bridge start control circuit - Google Patents
A.C. contactor half-bridge start control circuit Download PDFInfo
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- CN204270980U CN204270980U CN201420799535.5U CN201420799535U CN204270980U CN 204270980 U CN204270980 U CN 204270980U CN 201420799535 U CN201420799535 U CN 201420799535U CN 204270980 U CN204270980 U CN 204270980U
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- diode
- electric capacity
- contactor
- negative pole
- relay
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Abstract
The utility model relates to ac contactor control circuit.The utility model discloses a kind of A.C. contactor half-bridge start control circuit, be made up of resistance, electric capacity, relay and diode.A.C. contactor half-bridge start control circuit of the present utility model is a kind of control circuit be embedded in A.C. contactor shell, comprises A.C. contactor starting current supply circuit, runs change-over circuit and contactor holding current supply circuit.Contactor starting current supply circuit is made up of a pair normally-closed contact of the second diode, the 5th diode, the 8th diode, the first diode, the second resistance, the second electric capacity and relay.Run change-over circuit to be made up of relay, voltage-stabiliser tube and the 3rd electric capacity.Contactor holding current supply circuit is made up of the 4th diode, the 6th diode, the 9th diode, the first diode, the 3rd diode, the 4th electric capacity and the first electric capacity.The utility model reduces starting energy consumption, solves the energy loss problem of starting energy consumption and causing greatly.
Description
Technical field
The utility model relates to ac contactor control circuit, particularly a kind of A.C. contactor half-bridge start control circuit with energy-saving effect.
Background technology
A.C. contactor is that a kind of being applicable to frequently connects the low-voltage electrical apparatus exchanging main circuit and Large Copacity control circuit with disjunction at a distance, is one of most popular equipment in low-voltage electrical apparatus system, produce and application market very ripe.
Current China electricity-saving type A.C. contactor has had certain market, but universal not enough, and traditional A.C. contactor is occupied an leading position at present on user uses.Main cause is that power-saving contactor price is more expensive, and user can't accept in disposable input.And existing products in markets current specification span is very large, from 9A to 800A, existing control circuit specification is more is also one of reason that product cost is higher.A.C. contactor running environment is severe, is often subject to electromagnetic interference, has higher requirement to control circuit.A large amount of power consumptions of particularly starting moment have become the subject matter that urgently will solve now.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of A.C. contactor half-bridge start control circuit, reduces A.C. contactor and starts power consumption.
The utility model solve the technical problem, the technical scheme adopted is, A.C. contactor half-bridge start control circuit, by resistance, electric capacity, relay and diode are formed, it is characterized in that, first ac input end, the positive pole of the second diode and one end of the first electric capacity are electrical connected, the negative pole of the second diode, the positive pole of the 5th diode, one end of second resistance and relay contact are electrical connected, the negative pole of the 5th diode, the other end of the second resistance and the positive pole of the second electric capacity are electrical connected, the negative pole of the second electric capacity, another contact of relay and the positive pole of the 8th diode are electrical connected,
The positive pole of the other end of the first electric capacity, the negative pole of the 3rd diode and the 4th diode is electrical connected, the positive pole of the negative pole of the second ac input end, the first diode, the positive pole of the 3rd diode and the 6th diode is electrical connected, the positive pole of one end of the negative pole of the 4th diode, the negative pole of the 6th diode, relay coil, the negative pole of voltage stabilizing didoe, the positive pole of the 3rd electric capacity and the 4th electric capacity is electrical connected, and the negative pole of the other end of relay coil, the positive pole of voltage stabilizing didoe, the 3rd electric capacity and the positive pole of the 9th diode are electrical connected;
The negative pole of the 8th diode, the negative pole of the 9th diode and one end of magnet exciting coil are electrical connected, and the other end of magnet exciting coil, the negative pole of the 4th electric capacity and the positive pole of the first diode are electrical connected.
A.C. contactor half-bridge start control circuit of the present utility model is a kind of control circuit be embedded in A.C. contactor shell, comprises A.C. contactor starting current supply circuit, runs change-over circuit and contactor holding current supply circuit.Contactor starting current supply circuit is made up of a pair normally-closed contact of the second diode, the 5th diode, the 8th diode, the first diode, the second resistance, the second electric capacity and relay.Second diode pair alternating current carries out Half bridge rectifier, for magnet exciting coil provides starting current, is conducive to reducing startup power consumption, simplifying circuit design and reduce costs.Run change-over circuit to be made up of relay, voltage-stabiliser tube and the 3rd electric capacity.Contactor holding current supply circuit is made up of the 4th diode, the 6th diode, the 9th diode, the first diode, the 3rd diode, the 4th electric capacity and the first electric capacity.First electric capacity is ac buck electric capacity, for low-voltage circuit provides various electric current.In the utility model, the second electric capacity, the 3rd electric capacity and the 4th electric capacity all adopt polar capacitor, are conducive to reducing the space that takies of circuit structure and obtaining larger capacitance.
Further, piezo-resistance is parallel with between described first ac input end and the second ac input end.
In ac input end piezo-resistance in parallel, be conducive to the antijamming capability improving circuit, particularly improve the antijamming capability to strong jamming pulses such as thunders and lightnings.
Further, described magnet exciting coil two ends are parallel with the tenth diode, and described tenth diode cathode connects the 9th diode cathode.
The current ratio that magnet exciting coil passes through is comparatively large, starts and disconnects moment, can produce larger back electromotive force particularly, and parallel diode is conducive to the interference reducing back electromotive force, improves the stability of circuit.
The beneficial effects of the utility model are, reduce starting energy consumption, solve the energy loss problem of starting energy consumption and causing greatly.Circuit adopts passive device, and low cost, antijamming capability is strong.Low-voltage circuit adopts capacitance decompression, has that volume is little, the feature of low-temperature-rise.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Embodiment
As shown in Figure 1, this routine A.C. contactor half-bridge start control circuit, one end of ac input end A1, the positive pole of the second diode D2, one end of piezo-resistance R1 and ac buck electric capacity C1 is electrical connected, the negative pole of the second diode D2, the positive pole of the 5th diode D5, one end of the second resistance R2 and a contact of relay J 1 are electrical connected, the positive pole of the negative pole of the 5th diode D5, the other end of the second resistance R2 and the second electric capacity C2 is electrical connected, and the positive pole of the negative pole of the second electric capacity C2, another contact of relay J 1 and the 8th diode D8 is electrical connected.
The other end of ac buck electric capacity C1, the negative pole of the 3rd diode D3 and the positive pole of the 4th diode D4 are electrical connected, ac input end A2, the other end of piezo-resistance R1, the negative pole of the first diode D1, the positive pole of the 3rd diode D3 and the positive pole of the 6th diode D6 are electrical connected, the negative pole of the 4th diode D4, the negative pole of the 6th diode D6 and one end of relay J 1 coil, the negative pole of voltage-stabiliser tube D7, the positive pole of the 3rd electric capacity C3 and the positive pole of the 4th electric capacity C4 are electrical connected, the other end of relay J 1 coil, the positive pole of voltage-stabiliser tube D7, the negative pole of electrochemical capacitor C3 and the positive pole of diode D9 are electrical connected.
The negative pole of the 8th diode D8, the negative pole of the 9th diode D9, the negative pole of the tenth diode D10 and one end of magnet exciting coil L1 are electrical connected, and the negative pole of the positive pole of the tenth diode D10, the other end of magnet exciting coil L1, the 4th electric capacity C4 and the positive pole of the first diode D1 are electrical connected.
This routine control circuit course of work is described below:
Ac input end A1 with A2 is connected alternating current.
Starting current supply circuit: alternating current is via the input of A1 end, then the second diode D2 carries out halfwave rectifier, electric current flows through relay normally-closed contact JK-1, the 8th diode D8, flow process coil L1 and the first diode D1 gets back to A2 end, forms loop, for magnet exciting coil L1 provides starting current.5th diode D5, the second resistance R2 and the second electric capacity C2 are the arc-suppression circuits of relay normally-closed contact JK-1, can improve the useful life of circuit.
Holding current supply circuit: alternating current holds input by A1, A2, first electric capacity C1 is ac buck electric capacity, alternating current first carries out rectification by the 4th diode D4, the 6th D6 again by C1 step-down, electric current flows through coil and the voltage-stabiliser tube D7 of relay J 1, again by the 9th diode D9 and magnet exciting coil coil L1, then get back to ac input end A1 and A2 by the first diode D1, the 3rd diode D3, form loop, for magnet exciting coil L1 provides holding current.Use capacitance decompression, almost without temperature rise.Voltage-stabiliser tube D7, improves stability and the useful life of relay J 1.3rd electric capacity C3, reaches delay effect, makes the reliable adhesive of contactor, also plays the effect of filtering, makes the operating voltage of relay more stable.
Run change-over circuit: after the 3rd electric capacity C3 is full of electricity, electric current flows through the coil of relay J 1, and relay normally-closed contact JK-1 opens, and major loop power-off enters sticking state.
Piezo-resistance R1: suppress surge voltage, when the surge voltage maximum of transient state exceedes restriction, piezo-resistance R1 just embodies its clamping performance, too high voltage is dragged down, allows late-class circuit be operated in the scope of a safety.
4th electric capacity C4: be connected on relay front end, can effectively improve relay front voltage, and what relay and contactor were run is more stable.
Diode D10: reversal connection, at the two ends of coil, plays the effect of afterflow, is conducive to the interference reducing back electromotive force.
Claims (3)
1. A.C. contactor half-bridge start control circuit, be made up of resistance, electric capacity, relay and diode, it is characterized in that, the positive pole of the first ac input end, the second diode, one end of the first electric capacity are electrical connected, a contact of the negative pole of the second diode, the positive pole of the 5th diode, one end of the second resistance and relay is electrical connected, the positive pole of the negative pole of the 5th diode, the other end of the second resistance and the second electric capacity is electrical connected, and the positive pole of the negative pole of the second electric capacity, another contact of relay and the 8th diode is electrical connected;
The positive pole of the other end of the first electric capacity, the negative pole of the 3rd diode and the 4th diode is electrical connected, the negative pole of the second ac input end, the first diode and the positive pole of the 6th diode are electrical connected, one end of the negative pole of the 4th diode, the negative pole of the 6th diode and relay coil, the negative pole of voltage stabilizing didoe, the positive pole of the 3rd electric capacity, the positive pole of the 4th electric capacity are electrical connected, and the negative pole of the other end of relay coil, the positive pole of voltage stabilizing didoe, the 3rd electric capacity and the positive pole of the 9th diode are electrical connected;
The negative pole of the 8th diode, the negative pole of the 9th diode, one end of magnet exciting coil are electrical connected, and the other end of magnet exciting coil, the negative pole of the 4th electric capacity and the positive pole of the first diode are electrical connected.
2. A.C. contactor half-bridge start control circuit according to claim 1, is characterized in that, is parallel with piezo-resistance between described first ac input end and the second ac input end.
3. A.C. contactor half-bridge start control circuit according to claim 1, is characterized in that, described magnet exciting coil two ends are parallel with the tenth diode, and described tenth diode cathode connects the 9th diode cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799535.5U CN204270980U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor half-bridge start control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799535.5U CN204270980U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor half-bridge start control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270980U true CN204270980U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420799535.5U Expired - Fee Related CN204270980U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor half-bridge start control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204270980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428158A (en) * | 2015-10-31 | 2016-03-23 | 成都海沃斯电气技术有限公司 | AC contactor excitation coil and driving mechanism thereof |
-
2014
- 2014-12-16 CN CN201420799535.5U patent/CN204270980U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428158A (en) * | 2015-10-31 | 2016-03-23 | 成都海沃斯电气技术有限公司 | AC contactor excitation coil and driving mechanism thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone Chengdu city Sichuan province 610041 Gaopeng Road No. 5 building third floor third No. C2D1 Patentee after: Chengdu Hepworth electrical Limited by Share Ltd Address before: High tech Zone Chengdu city Sichuan province 610041 Gaopeng Road No. 5 building third floor third No. C2D1 Patentee before: Sea, Chengdu Butterworth electrical technology Co., Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20191216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |